Initial addition of mupen64plus formula; needs more testing on different systems.
Minor changes
Removed superfluous build options, and added pkg-config dependency
Changed OSD to enabled by default, since it's very useful
Removed ohais, changed File.utils.cd to simply cd, some whitespace removal, added a newline at the end, and removed explicit version number
mupen64plus 1.99.5 formula
Clarification for patches